the tip the fbi was acting on involved a rumored affair with his biography, paula broadwell. cnn has not been able to reach her for comment and it's also not clear whether she is the woman whom petraeus admitted having an affair with that led to his resignation. petraeus did not name the woman he was having an affair on. >>> more on general putretraeusd his career from chris lawrence. >> david petraeus sent this letter to the cia staff on friday admitting he had an affair and telling the staff that he had gone to the white house on thursday and asked president obama to accept his resignation. on friday during a phone call, the white house says the president did accept petraeus' resignation, throwing his national security team into fl just days after the election. by the time david petraeus got his first taste of real combat, he was a 50-year-old major general. in 2003, he commanded the 101st airborne during its march on baghdad. it was in iraq that he rhetorically asked a reporter, tell me how this ends, suggesting trouble the u.s. would have there in later years. there he ga